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the San people of the Kalahari Desert who accumulate large amounts of fat in the buttocks which is stored in the body for energy in times of hunger. The backside has been a fat-store for women in particular for thousands of years, especially important in areas of drought and crop failure. Ms.Kaplan has not succeeded in what she set out to do because in this silly article all she has done is reinforce a stereotype and attempt to turn the future First Lady of the USA into an erotic symbol just because she needs to feel good about herself.
Barack Obama's mother was an anthropologist and I can't help feeling that if Erin Aubry Kaplin knew even the most basic thing about body-shape and evolution she might have had the good sense to concentrate on something more germane than this butt-end of subjects. A butt is also a barrel, of course, but she's definitely scraping the barrel.